EnergyGuard Polyiso Insulated Sheathing is manufactured with
Environmental Protection Agency-compliant blowing agents containing
no chlorofluorocarbons or hydrochlorofluorocarbons and reportedly
reduces energy costs because of its high R-value. The 4- by 8-foot
boards are available in 1/2-, 3/4-, 1- and 2-inch thicknesses for a
range of applications.
Log in or register for FREE access to this article and other Professional Roofing online content.